The Design And Implementation Of Automatic Grinding And Polishing Control System Of Wind Power Blade Mould

Due to the complicated surface and the difficulties in grinding and polishing,the blades of wind generator and their moulds are still mainly dependent on manual grinding and polishing.Moreover,with the increasing size of the blades and moulds,the grinding strength of wind power industry also increases,dust pollution becomes more and more serious,the low efficiency of artificial grinding and polishing and the consistency of surface quality is difficult to guarantee,which make the manual grinding and polishing less and less favored in the industry.In addition,the poor workshop environment has greatly threatened the health of the workers,and there may be a shortage of grinding and polishing workers in the future.Therefore,the use of robots to achieve automatic grinding and polishing is of great realistic significance.After investigating the current situation of automatic grinding and polishing at home and abroad,this paper designs an automatic grinding and polishing control system for the blades’ moulds to meet the partner’s requirements on the grinding and polishing process of the blades’ moulds.This paper mainly completes the design of the control system,as well as the hardware’s design and the configurations of the system,and according to the functional requirements of the control system,uses the programmable logic controller(PLC)programming software to achieve the function.To design the hardware platform of the system,it mainly includes the detailed design of the robot unit,the servo drive unit,the programmable logic control and communication unit,the power control cabinet and other equipments to meet the workshop’s environment and the system’s requirements.In the realization of system functions,according to the functional requirements of the system,the industrial communication network between the system equipments are built,and the program of the programmable logic controler is written to realize the system’s control function.Finally,the touch screen is used to control and monitor the state of the main equipments in the system,so as to realize the man-machine interaction.In addition,for the speed PI controller of the grinding and polishing servo mechanism,fuzzy control is adopted to optimize it,so as to reduce the speed overshoot,improve its dynamic performance and anti-interference ability,eventually to enhance its adaptability of variable load and improve the grinding and polishing quality.Finally,the automatic grinding and polishing control system has been debugged,which has proved that the system could work normally and reliably.And the automatic grinding and polishing control system has also met the partner’s requirements for the surface roughness of the moulds,with the smooth surface and good quality consistency,and it has been applied in the actual grinding and polishing operation of the moulds.